Synthesis and properties of FeCl4-doped polythiophene

Jan-Erik Österholm, Pentti Passiniemi, Heikki Isotalo, Henrik Stubb

Research output: Contribution to journalArticleScientific

66 Citations (Scopus)

Abstract

Electrochemically synthesized polythiophene films containing BF4−-anions, PT-BF4, have been carefully reduced and re-oxidized with FeCl4-anions to obtain highly conducting PT-FeCl4-films. The maximum conductivity we have observed for this complex is 50 Scm−1 which corresponds to a maximum dopant concentration of approximately 26 mol-%.

Thermoelectric power (TEP) measurements of lightly and heavily doped PT-FeCl4 show that the positive TEP decreases drastically from 614 μV/K to 10.5 μV/K when the conductivity increases from 1.1 10−5 to 10.1 Scm−1. In heavily doped samples TEP is slightly overlinear, a phenomenon which is explained by a model based on conducting strands separated by thin potential barriers.

PT-FeCl4-films exhibit promising stability properties, the conductivity remaining in the metallic regime for at least 16 months under ambient conditions.
Original languageEnglish
Pages (from-to)213-218
JournalSynthetic Metals
Volume18
Issue number1-3
DOIs
Publication statusPublished - 1987
MoE publication typeB1 Article in a scientific magazine
EventInternational Conference of Science and Technology of Synthetic Metals, ICSM '86 - Kyoto, Japan
Duration: 1 Jun 19866 Jun 1986

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Thermoelectric power
conductivity
Anions
Polymers
Negative ions
synthesis
anions
conduction
strands
Doping (additives)
polythiophene

Cite this

Österholm, J-E., Passiniemi, P., Isotalo, H., & Stubb, H. (1987). Synthesis and properties of FeCl4-doped polythiophene. Synthetic Metals, 18(1-3), 213-218. https://doi.org/10.1016/0379-6779(87)90881-2
Österholm, Jan-Erik ; Passiniemi, Pentti ; Isotalo, Heikki ; Stubb, Henrik. / Synthesis and properties of FeCl4-doped polythiophene. In: Synthetic Metals. 1987 ; Vol. 18, No. 1-3. pp. 213-218.
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abstract = "Electrochemically synthesized polythiophene films containing BF4−-anions, PT-BF4, have been carefully reduced and re-oxidized with FeCl4-anions to obtain highly conducting PT-FeCl4-films. The maximum conductivity we have observed for this complex is 50 Scm−1 which corresponds to a maximum dopant concentration of approximately 26 mol-{\%}.Thermoelectric power (TEP) measurements of lightly and heavily doped PT-FeCl4 show that the positive TEP decreases drastically from 614 μV/K to 10.5 μV/K when the conductivity increases from 1.1 10−5 to 10.1 Scm−1. In heavily doped samples TEP is slightly overlinear, a phenomenon which is explained by a model based on conducting strands separated by thin potential barriers.PT-FeCl4-films exhibit promising stability properties, the conductivity remaining in the metallic regime for at least 16 months under ambient conditions.",
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Österholm, J-E, Passiniemi, P, Isotalo, H & Stubb, H 1987, 'Synthesis and properties of FeCl4-doped polythiophene', Synthetic Metals, vol. 18, no. 1-3, pp. 213-218. https://doi.org/10.1016/0379-6779(87)90881-2

Synthesis and properties of FeCl4-doped polythiophene. / Österholm, Jan-Erik; Passiniemi, Pentti; Isotalo, Heikki; Stubb, Henrik.

In: Synthetic Metals, Vol. 18, No. 1-3, 1987, p. 213-218.

Research output: Contribution to journalArticleScientific

TY - JOUR

T1 - Synthesis and properties of FeCl4-doped polythiophene

AU - Österholm, Jan-Erik

AU - Passiniemi, Pentti

AU - Isotalo, Heikki

AU - Stubb, Henrik

PY - 1987

Y1 - 1987

N2 - Electrochemically synthesized polythiophene films containing BF4−-anions, PT-BF4, have been carefully reduced and re-oxidized with FeCl4-anions to obtain highly conducting PT-FeCl4-films. The maximum conductivity we have observed for this complex is 50 Scm−1 which corresponds to a maximum dopant concentration of approximately 26 mol-%.Thermoelectric power (TEP) measurements of lightly and heavily doped PT-FeCl4 show that the positive TEP decreases drastically from 614 μV/K to 10.5 μV/K when the conductivity increases from 1.1 10−5 to 10.1 Scm−1. In heavily doped samples TEP is slightly overlinear, a phenomenon which is explained by a model based on conducting strands separated by thin potential barriers.PT-FeCl4-films exhibit promising stability properties, the conductivity remaining in the metallic regime for at least 16 months under ambient conditions.

AB - Electrochemically synthesized polythiophene films containing BF4−-anions, PT-BF4, have been carefully reduced and re-oxidized with FeCl4-anions to obtain highly conducting PT-FeCl4-films. The maximum conductivity we have observed for this complex is 50 Scm−1 which corresponds to a maximum dopant concentration of approximately 26 mol-%.Thermoelectric power (TEP) measurements of lightly and heavily doped PT-FeCl4 show that the positive TEP decreases drastically from 614 μV/K to 10.5 μV/K when the conductivity increases from 1.1 10−5 to 10.1 Scm−1. In heavily doped samples TEP is slightly overlinear, a phenomenon which is explained by a model based on conducting strands separated by thin potential barriers.PT-FeCl4-films exhibit promising stability properties, the conductivity remaining in the metallic regime for at least 16 months under ambient conditions.

U2 - 10.1016/0379-6779(87)90881-2

DO - 10.1016/0379-6779(87)90881-2

M3 - Article

VL - 18

SP - 213

EP - 218

JO - Synthetic Metals

JF - Synthetic Metals

SN - 0379-6779

IS - 1-3

ER -

Österholm J-E, Passiniemi P, Isotalo H, Stubb H. Synthesis and properties of FeCl4-doped polythiophene. Synthetic Metals. 1987;18(1-3):213-218. https://doi.org/10.1016/0379-6779(87)90881-2